Thermal insulation structure at bottom of aluminum electrolysis cell
By forming an insulation zone at the bottom of the aluminum electrolytic cell and using the heat of the thermal conductivity medium and high-temperature flue gas, the problem of poor insulation effect at the bottom of the aluminum electrolytic cell is solved, achieving more efficient heat retention and energy consumption reduction.
Patent Information
- Application Number
- CN202420209514.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The insulation effect at the bottom of the existing aluminum electrolytic tank is poor, resulting in increased energy consumption and excessive heat loss.
Brick layers and support columns are laid in the pit of the factory to form an insulation zone, and the high-temperature flue gas in the smoke exhaust pipeline is guided into the insulation zone through the pipeline, filling the thermally conductive medium to increase the temperature of the insulation zone.
It effectively improves the insulation effect of the bottom of the aluminum electrolytic cell, reduces the amount of heat dissipation from the bottom to the outside, and improves the overall insulation performance of the aluminum electrolytic cell.
Smart Images
Figure CN222160391U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy saving of aluminum electrolytic cells, in particular to a heat preservation structure of the bottom of an aluminum electrolytic cell. Background Art
[0002] Industrial aluminum is mainly produced by electrolyzing aluminum oxide in an electrolytic cell. When current passes through the aluminum electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce aluminum.
[0003] The whole process is carried out in a high temperature environment, and heat preservation of the aluminum electrolytic cell is a direct measure to reduce energy consumption. However, the aluminum electrolytic cell is installed on the ground in the factory building, and a single aluminum electrolytic cell occupies a large area. Generally, insulation bricks are laid at the bottom of the aluminum electrolytic cell, but the insulation effect of the insulation bricks on the bottom of the aluminum electrolytic cell is poor. Utility Model Content
[0004] In view of the technical problem in the prior art that the thermal insulation effect of the bottom of the aluminum electrolysis cell is poor, the utility model provides a thermal insulation structure for the bottom of the aluminum electrolysis cell, which has the advantage of improving the thermal insulation effect of the aluminum electrolysis cell.
[0005] The technical solution of the utility model is:
[0006] A thermal insulation structure for the bottom of an aluminum electrolytic cell, comprising:
[0007] A brick layer is laid in the pit of the factory building, and an anti-seepage layer is laid on the top surface of the brick layer;
[0008] A plurality of support columns are arranged on the top of the brick layer, and the tops of the support columns are supported on the bottom of the aluminum electrolytic cell;
[0009] A pipeline is laid between the brick layer and the aluminum electrolysis cell and bypasses the support column, and both ends of the pipeline are respectively connected to the exhaust pipe of the aluminum electrolysis cell;
[0010] Wherein, a heat preservation zone is formed between the brick layer and the aluminum electrolysis cell, and the heat preservation zone is filled with a heat-conducting medium.
[0011] Optionally, a support plate is provided on the top of the support column, the aluminum electrolysis cell is arranged on the support plate, and the top surface of the support plate is flush with the bottom surface of the plant building.
[0012] Optionally, both ends of the pipe penetrate into the interior of the smoke exhaust pipeline, and one end of the pipe faces an end of the smoke exhaust pipeline connected to the aluminum electrolysis cell.
[0013] Optionally, the pipe is in the smoke exhaust pipeline and has a bell-mouth structure at one end thereof facing the aluminum electrolysis cell.
[0014] Optionally, the support column is made of stacked bricks, and the anti-seepage layer is also laid on the outer circumference of the support column.
[0015] Optionally, the support plate occupies an area larger than the bottom surface of the aluminum electrolysis cell.
[0016] Optionally, a section of the pipeline exposed outside the pit is wrapped with insulation material.
[0017] Optionally, the insulation zone is built with bricks on its circumference, and the anti-seepage layer is also provided on one circumference of the insulation zone.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] First, the bottom of the aluminum electrolytic cell is supported in the pit of the factory by supporting columns to form an insulation zone. Then, the high-temperature flue gas in the exhaust pipe of the aluminum electrolytic cell is guided to the insulation zone through a pipe, and the pipe is spiraled in the insulation zone. At the same time, the insulation zone is filled with a heat-conducting medium. Through the heat-conducting medium, the heat of the flue gas in the pipe is quickly transferred to the insulation zone, so that the insulation zone is in a higher temperature state.
[0020] In the present technical solution, since the temperature of the insulation zone is relatively high, the temperature of the bottom of the aluminum electrolytic cell is relatively high, thereby reducing the amount of heat dissipated from the bottom of the aluminum electrolytic cell to the outside, thereby achieving the purpose of improving the insulation of the bottom of the aluminum electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0023] Figure 2 Schematic diagram of the internal structure of the insulation zone;
[0024] Figure 3 This is a schematic diagram of the pipeline laying status;
[0025] Figure 4 This is a schematic diagram of the installation structure of the pipe in the smoke exhaust pipeline. DETAILED DESCRIPTION
[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0029] Example:
[0030] See also Figure 1-Figure 4 A thermal insulation structure for the bottom of an aluminum electrolytic cell comprises a brick layer 1, a support column 2 and a pipe 3. Specifically, a pit is dug in a factory building where an aluminum electrolytic cell 7 is to be installed, and at least one layer of thermal insulation bricks is laid at the bottom of the pit and around the pit to form a brick layer 1.
[0031] A plurality of support columns 2 are arranged on the brick layer 1. The support columns 2 can also be made of bricks. All the support columns 2 have the same height and are flush with the mouth of the pit. An aluminum electrolytic cell 7 is installed on the top of all the support columns 2, and a space is formed between the bottom of the aluminum electrolytic cell 7 and the bottom surface of the pit, and the space is set as the insulation zone 4.
[0032] Both ends of the pipe 3 are connected to the exhaust pipe 5 of the aluminum electrolytic cell 7. At the same time, the pipe 3 is also coiled in the insulation area 4 and is arranged between all the support columns 2. Generally, both ends of the pipe 3 are inserted into the exhaust pipe 5, and one end of the pipe 3 faces the end of the exhaust pipe 5 connected to the aluminum electrolytic cell 7. Through the flow of smoke in the exhaust pipe 5, the smoke can naturally flow into the pipe 3 and flow in the pipe 3 at a relatively slow speed, thereby achieving the purpose of sufficient heat exchange.
[0033] In addition, the interior of the heat preservation area 4 is also filled with a heat conducting medium, which is generally an oil substance, such as heat transfer oil, etc. And an impermeable layer is laid on the brick layer 1, the support column 2 and the inner wall of the pit to prevent the loss of the heat conducting medium.
[0034] The working principle of this embodiment is to first support the bottom of the aluminum electrolytic cell 7 in the pit of the factory building through the support column 2 to form the insulation zone 4, and then guide the high-temperature flue gas in the exhaust pipe 5 of the aluminum electrolytic cell 7 to the insulation zone 4 through the pipe 3, and make the pipe 3 spiral in the insulation zone 4. At the same time, the insulation zone 4 is filled with a heat-conducting medium, and the heat of the flue gas in the pipe 3 is quickly transferred to the insulation zone 4 through the heat-conducting medium, so that the insulation zone 4 is in a relatively high temperature state.
[0035] In the present technical solution, since the temperature of the insulation zone 4 is relatively high, the temperature of the bottom of the aluminum electrolysis cell 7 is relatively high, thereby reducing the amount of heat inside the aluminum electrolysis cell 7 that is lost from its bottom to the outside, thereby achieving the purpose of improving the insulation of the bottom of the aluminum electrolysis cell 7.
[0036] Preferably, a support plate 6 is provided on the top of all the support columns 2, the top surface of the support plate 6 is flush with the bottom surface of the plant, and the aluminum electrolysis cell 7 is installed on the support plate 6. At the same time, the area occupied by the support plate 6 is larger than the area occupied by the bottom surface of the aluminum electrolysis cell 7. By providing the support plate 6, the bottom of the aluminum electrolysis cell 7 is evenly supported.
[0037] In one specific embodiment:
[0038] One end of the pipe 3 in the smoke exhaust pipeline 5 and facing the aluminum electrolysis cell 7 is a bell-mouth structure. By setting this end of the pipe 3 as a bell-mouth structure, the amount of smoke flowing into the pipe 3 is increased.
[0039] Preferably, the pipe 3 is arranged along the flue gas flow direction at the other end of the smoke exhaust pipeline 5, thereby reducing the pressure outside this end of the pipe 3 and facilitating the discharge of the smoke in the pipe 3. The principle is that the smoke flow velocity in the smoke exhaust pipeline 5 is large, and the smoke flow velocity at the end of the pipe 3 is small. According to the Bernoulli principle, the pressure outside the pipe 3 is small and the pressure inside the pipe 3 is large, thereby increasing the discharge speed of the smoke in the pipe 3.
[0040] In another specific embodiment:
[0041] The pipe 3 is made of stainless steel or aluminum alloy with good thermal conductivity. Therefore, in order to avoid heat loss in the section of the pipe 3 exposed outside the pit, a thermal insulation material is wrapped on the section of the pipe 3 exposed outside the pit.
[0042] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A thermal insulation structure for the bottom of an aluminum electrolytic cell, It is characterized in that include: A brick layer is laid in the pit of the factory building, and an anti-seepage layer is laid on the top surface of the brick layer; A plurality of support columns are arranged on the top of the brick layer, and the tops of the support columns are supported on the bottom of the aluminum electrolytic cell; A pipeline is laid between the brick layer and the aluminum electrolysis cell and bypasses the support column, and both ends of the pipeline are respectively connected to the exhaust pipe of the aluminum electrolysis cell; Wherein, a heat preservation zone is formed between the brick layer and the aluminum electrolysis cell, and the heat preservation zone is filled with a heat-conducting medium.
2. The thermal insulation structure of the bottom of the aluminum electrolysis cell according to claim 1, It is characterized in that A support plate is provided on the top of the support column, the aluminum electrolysis cell is arranged on the support plate, and the top surface of the support plate is flush with the bottom surface of the plant building.
3. The thermal insulation structure of the bottom of the aluminum electrolysis cell according to claim 1, It is characterized in that Both ends of the pipe penetrate into the interior of the smoke exhaust pipeline, and one end of the pipe faces the end of the smoke exhaust pipeline connected to the aluminum electrolysis cell.
4. The thermal insulation structure of the bottom of an aluminum electrolysis cell according to claim 3, Features The pipe is in the smoke exhaust pipeline and has a bell-mouth structure at one end thereof facing the aluminum electrolysis cell.
5. The thermal insulation structure of the bottom of an aluminum electrolysis cell according to claim 1, It is characterized in that The support column is formed by stacking bricks, and the anti-seepage layer is also laid on the outer circumference of the support column.
6. The thermal insulation structure of the bottom of an aluminum electrolysis cell according to claim 2, It is characterized in that The area occupied by the support plate is larger than the area occupied by the bottom surface of the aluminum electrolysis cell.
7. The thermal insulation structure of the bottom of an aluminum electrolysis cell according to claim 1, It is characterized in that A section of the pipeline exposed outside the pit is wrapped with a heat-insulating material.
8. The thermal insulation structure of the bottom of an aluminum electrolysis cell according to claim 1, It is characterized in that The insulation zone is formed by stacking bricks around its circumference, and the anti-seepage layer is also arranged around the insulation zone.